Automatic grain-scale



(No Model.)

1). E. KELLEY & H. D. PRATT.

AUTOMATIC GRAIN SCALE.

Patented Dec. 14, 1886.

No. 354,45. ,x. n h.

M I :y 0

WITNESSES I I K INVEWTOR J LdwM M fi I Attorney J.

N. PETERS. Pholc-Lilhogmpher. Wmhin lun. 1C.

U ITED STATES PATENT ;OFFICE@ DANIEL KELLEY AND HARVEY D. PRATT, OFGAYLORD, KANSAS.

AUTOMATlC GRAIN-SCALE.

EPEZCIE'IQATION forming part of Letters Patent No. 354,423, datedDecember 14, 1.886.

l wplicution filed April 6, 1886. Serial No. 197,989. (No model.)

To all whom it may concern.-

Be it known that we, DANIEL E. KELLEY and HARVEY D. PRATT, bothresidents of Gay lord, in the county of Smith and State of Kansas, haveinvented certain new and useful Improvements in Automatic Grain-Scales;and we do hereby declare that the following is a full, clear, and exactdescription of the invention,which will enable others skilled in the artto which it appertains to make and use the same, reference being had tothe accompanyi ng drawings, which form a part of this specification, andin which- Figure 1 is a front view of our improved grain-weighingmachine. Fig. 2 is an end view. Fig. 3 is a vertical sectional view online a: 31', Fig. 1; and Fig. 4 is a perspective detail view of thecut-off mechanism for the hop per.

Similar letters of reference indicate corresponding parts in all thefigures.

Our invention has relation to that class of automatic grain-scales inwhich the grain is fed from a suitable hopper into a cylinder havingradiating partitions, and having its shaft journaled in thedownwardly-pending ends of links pivoted to forward ends of scale-beams,and provided with slot-stops registering with the compartments andengaging a spring-pawl when the cylinder is raised by the poises uponthe scale-beams; and it consists in the improved construction andcombination of parts of such a scale or weighing-machine, as hereinaftermore fully described and claimed.

In the accompanying drawings, the letters A Aindicate the side pieces ofthe supporting-frame, and the outer sides of these side pieces areprovided near their middles with bifurcated scale-bearings B B, in whichthe pivots O of the forwardly-projecting scalebeams D are pivoted, thesaid beams being connected at their rear ends by a cross-bar, E, andhaving sliding poises F upon their grad nated portions.

Links G G are pivoted to the forward ends of the scalebeams and dependfrom the same, and a shaft, H, is journaled in the lower ends of theselinks, and has a cylinder, I, jonrnaled upon it. This cylinder is formedby two circular heads, J J, to the inner sides of which the ends ofpartitions K are secured, the said partitions radiating from the sidesor faces of beams overcome the weight of the cylinder and support it inits raised position.

The lower portion of the compartment-cylinder revolves in the upperportion of a spout,

N, into which the grain may be discharged from the cylinder, and ahopper, O, is secured between the upper ends of the frame-pieces, havingits spout immediately above the com partment of the cylinder, which maybe poi11ting upward.

Two L.-shaped levers, P P, are pivoted at their elbows to the ends ofthe hopper, and have outwardly-projecting arms provided with weights Q,and downwardly-projecting arms provided with a cuto f slide, It, securedto the lower ends of the said arms and sliding snugly under the endofthe spout ofthe hopper. The upper ends of upwardlyprojecting rods S Sare pivoted to the outwardly-projecting arms of the lovers near thepivotal points, and these rods slide in vertical ways upon the innersides of the frame-pieces, and are connectedat their lower ends to thejournal of the cylinder.

It will now be seen that when thegrain passes from the hopper into thecompartment facing the spout of the hopper the weight of the grain inthis compartment will at last overcome the weight of the poises, whichhave been adjusted upon the scale-beams so as to be tipped at acertainweight, and when the cylinder is depressed by the Weight of the grain inthe compartment the notches upon the pe riphery of the heads whichengage the spring pawls upon the frame will be disengaged, allowing thecylinder to rotate and to discharge the contents of the compartmentintothe spout.

As the compartments are formed upon the sides of the middle shaft, thecenter of gravity of each compartment will be at that side when it isfull, and as soon as it is released from the engaging pawl it willrotate in that direction. As soon as it has rotated enough to permit anyof the grain to escape, the weight of the poises will raise it againstthe pawls and cause them to engage with the next succeeding notch andprevent the cylinder from rotating too far.

hen the cylinder is depressed, the rods attached to the journal of thecylinder will be allowed to move downward and allow theoutwardly-projecting ends of the levers to tilt the cut-off slide beforethe spout of the hopper, cutting off the flow of grain, and when thecylinder again is raised the rods will raise the weighted arms and theslide will be tilted away from the spout, allowing the grain to flowinto the compartment. In this manner the machine may automatically weighthe grain flowing from the hopper and dump each quantity, and byconnecting a registering device to the weighing device the number ofcompartments emptied may be registered.-

Having thus described our invention, we claim and desire to secure byLetters Patent of the United States- 2 In automatic grain-scales of thedescribed general construction, the cut-off mechanism consisting of theelbow-levers P, connected by the cutoff plate R, and provided with theadjustable weights Q, in combination with the 0 connectingrods S andcylinder I, suspended 011 the seale-beams, as set forth.

In testimony that we claim the foregoing as our own we have hereuntoaffixed our signatn res in presence of two witnesses.

DANIEL E. KELLEY. HARVEY I). PRATT. Witnesses:

RosorUs HAG ADORN, GEO. R. PARKER.

